Remove duplicate legacy-tempest-dsvm-multinode-full job

Experimental job 'legacy-tempest-dsvm-multinode-full'
is duplicate of 'tempest-multinode-full' job which is running
in check pipeline as n-v job.

This commit remove the legacy duplicate job from experimental pipeline.

Change-Id: I462e8451465bc5de85846cf26737405d16b5752e
1 file changed